Theorem syld3an3 1217

Description: A syllogism inference. (Contributed by NM, 20-May-2007.)

Hypotheses

Ref	Expression
syld3an3.1	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
syld3an3.2	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜃) → 𝜏)

Assertion

Ref	Expression
syld3an3	⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜏)

Proof of Theorem syld3an3

Step	Hyp	Ref	Expression
1		simp1 941	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜑)
2		simp2 942	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜓)
3		syld3an3.1	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
4		syld3an3.2	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜃) → 𝜏)
5	1, 2, 3, 4	syl3anc 1172	1 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜏)

Syntax hints:   → wi 4   ∧ w3a 922

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106

This theorem depends on definitions:  df-bi 115  df-3an 924

This theorem is referenced by:  syld3an1  1218  syld3an2  1219  brelrng  4634  moriotass  5597  nnncan1  7662  lediv1  8265  modqval  9659  modqvalr  9660  modqcl  9661  flqpmodeq  9662  modq0  9664  modqge0  9667  modqlt  9668  modqdiffl  9670  modqdifz  9671  modqvalp1  9678  expival  9855  bcval4  10056  dvdsmultr1  10709  dvdssub2  10713  divalglemeuneg  10798  ndvdsadd  10806